Signature analysis

Details Signature analysis Signature analysis

1990-03-09

1991-02-05

Smith, Jerry

Excavating

371 151, 371 212, G06F 1100

Patent

active

049911759

ABSTRACT:
Digital signal processing apparatus which can be tested by signature analysis is arranged so that a predetermined number of its ROM locations have stored therein pre-selected values whereby the signature analysis is independent of the contents of the remainder of the memory location. Appropriately valued bytes are stored in the N last-record memory location and these bytes establish a predetermined signature for each data pin regardless of firmware changes.

REFERENCES:
patent: 3573751 (1971-04-01), Delisle
patent: 4192451 (1980-03-01), Swerling
patent: 4493078 (1985-01-01), Daniels
patent: 4601033 (1986-07-01), Whelan
patent: 4601034 (1986-07-01), Sridhar
patent: 4733405 (1988-03-01), Shimizume
Application Note 222-2, "Application Articles on Signature Analysis", Hewlett Packard Company, Publication No. 02-5952-7542, Oct. 1980.

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